--- service: j.root-servers.net start-period: '2015-09-09T00:00:00Z' end-period: '2015-09-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5489734698 dns-udp-queries-received-ipv6: 297248858 dns-tcp-queries-received-ipv4: 75331417 dns-tcp-queries-received-ipv6: 20589910 dns-udp-responses-sent-ipv4: 4376720606 dns-udp-responses-sent-ipv6: 298039644 dns-tcp-responses-sent-ipv4: 72200659 dns-tcp-responses-sent-ipv6: 18739701